Note the "display:block" inline style attached to the sbText div. This
is simply telling the browser that it should display this div by default,
which it would do anyway, but this gives us something for the JavaScript
to grab onto so that we can change that value later. We've also specified
the width of the sidebar and the content divs. Finally, when we place our
"toggle.jpg" image, we're assigning it an onclick function of "toggle()".
This is our function call to the JavaScript that will actually do the expanding
/ collapsing. Let's write that now.